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ZOOMING AROUND THE CENTRAL PARSEC:
Gravitational Waves from Glactic Nuclei
Shane L. Larson, Center for
Gravitational Wave Physics, Penn State
Galactic nuclei are energetic domains which harbor large stellar
populations and whose dynamics are often dominated by the presence of
massive black holes. Observing nuclear star clusters in the
electromagnetic spectrum is possible, but resolving individual stellar
encounters with the central black hole is difficult at best. By
contrast, low frequency gravitational waves generated by the close
encounters of small objects with massive black holes will propogate
freely out of galactic nuclei, carry information about the region very
near to the horizon of the black hole, and should be visible to the
proposed LISA observatory. In this talk I will discuss ongoing efforts
to understand the dynamics of the innermost galactic stellar population,
convince you that
"zooming" is a technical term, and describe some of our early
predictions of what we should be able to observe with a space-based
gravitational wave observatory. |